diff options
| author | Michael Chan <mchan@broadcom.com> | 2007-07-08 07:51:36 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-11 07:18:36 +0200 |
| commit | df149d70e1f34ec4995c8a703dbde38071ff4a05 (patch) | |
| tree | 09103d4b997158202370619f5a1492a69f85e7af /drivers/net/bnx2.c | |
| parent | [BNX2]: Reduce spurious INTA interrupts. (diff) | |
| download | linux-df149d70e1f34ec4995c8a703dbde38071ff4a05.tar.xz linux-df149d70e1f34ec4995c8a703dbde38071ff4a05.zip | |
[BNX2]: Enhance the heartbeat.
In addition to the periodic heartbeat, we're adding a heartbeat
request interrupt when the heartbeat is late. This is needed during
netpoll where the timer is not available. -rt kernels will also
benefit since the timer is not as accurate.
[ We discussed this patch last time and we decided that the -rt
kernel problem alone did not justify this patch. I think the
netpoll problem makes this patch necessary. ]
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bnx2.c')
| -rw-r--r-- | drivers/net/bnx2.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index a806a8edec87..e7551040b096 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -1487,6 +1487,20 @@ bnx2_set_default_link(struct bnx2 *bp) } static void +bnx2_send_heart_beat(struct bnx2 *bp) +{ + u32 msg; + u32 addr; + + spin_lock(&bp->indirect_lock); + msg = (u32) (++bp->fw_drv_pulse_wr_seq & BNX2_DRV_PULSE_SEQ_MASK); + addr = bp->shmem_base + BNX2_DRV_PULSE_MB; + REG_WR(bp, BNX2_PCICFG_REG_WINDOW_ADDRESS, addr); + REG_WR(bp, BNX2_PCICFG_REG_WINDOW, msg); + spin_unlock(&bp->indirect_lock); +} + +static void bnx2_remote_phy_event(struct bnx2 *bp) { u32 msg; @@ -1495,6 +1509,11 @@ bnx2_remote_phy_event(struct bnx2 *bp) msg = REG_RD_IND(bp, bp->shmem_base + BNX2_LINK_STATUS); + if (msg & BNX2_LINK_STATUS_HEART_BEAT_EXPIRED) + bnx2_send_heart_beat(bp); + + msg &= ~BNX2_LINK_STATUS_HEART_BEAT_EXPIRED; + if ((msg & BNX2_LINK_STATUS_LINK_UP) == BNX2_LINK_STATUS_LINK_DOWN) bp->link_up = 0; else { @@ -1572,6 +1591,7 @@ bnx2_set_remote_link(struct bnx2 *bp) break; case BNX2_FW_EVT_CODE_SW_TIMER_EXPIRATION_EVENT: default: + bnx2_send_heart_beat(bp); break; } return 0; @@ -4122,7 +4142,7 @@ bnx2_init_chip(struct bnx2 *bp) rc = bnx2_fw_sync(bp, BNX2_DRV_MSG_DATA_WAIT2 | BNX2_DRV_MSG_CODE_RESET, 0); - REG_WR(bp, BNX2_MISC_ENABLE_SET_BITS, 0x5ffffff); + REG_WR(bp, BNX2_MISC_ENABLE_SET_BITS, BNX2_MISC_ENABLE_DEFAULT); REG_RD(bp, BNX2_MISC_ENABLE_SET_BITS); udelay(20); @@ -4930,7 +4950,6 @@ static void bnx2_timer(unsigned long data) { struct bnx2 *bp = (struct bnx2 *) data; - u32 msg; if (!netif_running(bp->dev)) return; @@ -4938,8 +4957,7 @@ bnx2_timer(unsigned long data) if (atomic_read(&bp->intr_sem) != 0) goto bnx2_restart_timer; - msg = (u32) ++bp->fw_drv_pulse_wr_seq; - REG_WR_IND(bp, bp->shmem_base + BNX2_DRV_PULSE_MB, msg); + bnx2_send_heart_beat(bp); bp->stats_blk->stat_FwRxDrop = REG_RD_IND(bp, BNX2_FW_RX_DROP_COUNT); |